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ARC-Easy / Mercury_SC_400518 / A geologist found several types of seashell fossils in a rock layer. Which is…

Problem

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question

A geologist found several types of seashell fossils in a rock layer. Which is the best conclusion about the rock layer?

choices

  • The rock was once buried under a swamp.
  • Water from a river washed across the rock.
  • The rock was once sediment at the bottom of an ocean.
  • Migrating animals dropped the seashell into the rock.

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